ITU chief declares Z6 prefix illegal

| June 22, 2018

The Secretary-General of the International Telecommunication Union has said that authorising Kosovo Z6 call signs is “unauthorised and illegal”.

Houlin Zhao said;

“ITU has not allocated call sign series Z6 to any of its member states.

“Consequently, the utilisation of call sign series Z6 by any entity without a formal allocation and consent of the ITU represents an unauthorised and illegal usage of this international numbering resource.”

Kosovo is not an ITU member state and is thus not eligible to receive a call sign block allocation from the ITU.

More information is in the ITU Operational Bulletin No. 1149 (11-page/493KB PDF).

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